Dr. Karen Gremminger, Hematologist/Medical Oncologist, is from Houston, Texas and graduated from Texas A & M with undergraduate degrees in Food Science and Technology. She received her Doctorate of Medicine from Texas Tech University School of Medicine in Lubbock Texas.
Dr. Karen Gremminger, Hematologist/Medical Oncologist, is from Houston, Texas and graduated from Texas A & M with undergraduate degrees in Food Science and Technology. She received her Doctorate of Medicine from Texas Tech University School of Medicine in Lubbock Texas.
The reviews listed below were collected independently of Cobre Valley Regional Medical Center through rater8. Each review represents an authentic and verified patient experience.
Yes
(1 week ago)
Feb-2026
Excellent doctor, caring, loving considers all options
(2 weeks ago)
Feb-2026
Explains things very welll
(1 month ago)
Jan-2026
A great doctor!
(1 month ago)
Jan-2026
Dr Gremminger is agreat doctor and caring person her staff is super good team
(2 months ago)
Dec-2025
Doctor found my place and name on my organism disease 🦠 and more on that .
(3 months ago)
Nov-2025
Excellent!
(6 months ago)
Sep-2025
Doctor G.- Is very easy to talk to, and tells you what you need to know.
(7 months ago)
Aug-2025
I wouldn't want chemo done anywhere else! Dr. Gremminger is the best. Very good about talking to you about treatment in layman's terms so you understand. The nurses are very caring and knowledgeable. I am glad we have such great oncology office locally!
Dr. Karen Gremminger, Hematologist/Medical Oncologist, is from Houston, Texas and graduated from Texas A & M with undergraduate degrees in Food Science and Technology. She received her Doctorate of Medicine from Texas Tech University School of Medicine in Lubbock Texas. Her education continued at the LDS Hospital in Salt Lake City, Utah where she completed her Internship and Residency in Internal Medicine. Dr. Gremminger completed her Fellowship in Hematology/Medical Oncology at the University of Utah Health Sciences Center.
Dr. Gremminger and her husband, Mark Bullard, met in medical school. They lived 22 years in Oshkosh, Wisconsin where Dr. Gremminger worked in a community of about 60,000 people and enjoyed community outreach to smaller communities nearby. She and Mark moved to Arizona to be closer to family after their twin daughters graduated from high school.
Karen and Mark have three daughters who are currently attending Grand Canyon University, Arizona State University, and Central Arizona College.
In Dr. Gremminger’s spare time, she enjoys gardening, swimming, hiking, refinishing furniture, and home repair projects. She likes to stay busy and is also an Arizona Master Gardener trained in Pinal County and she volunteers at Boyce Thompson Arboretum as well as Special Olympics.
Yes
Excellent doctor, caring, loving considers all options
Explains things very welll
A great doctor!
Dr Gremminger is agreat doctor and caring person her staff is super good team
Doctor found my place and name on my organism disease 🦠 and more on that .
Excellent!
Doctor G.- Is very easy to talk to, and tells you what you need to know.
I wouldn't want chemo done anywhere else! Dr. Gremminger is the best. Very good about talking to you about treatment in layman's terms so you understand. The nurses are very caring and knowledgeable. I am glad we have such great oncology office locally!
very good doctor